Sex	Social class	Average number	Total
BOTH SEXES	Total	Average	87.88
BOTH SEXES	Total	Standard deviation	10.24
BOTH SEXES	I	Average	89.04
BOTH SEXES	I	Standard deviation	9.16
BOTH SEXES	II	Average	88.74
BOTH SEXES	II	Standard deviation	9.85
BOTH SEXES	III	Average	88.11
BOTH SEXES	III	Standard deviation	10.72
BOTH SEXES	IV	Average	87.17
BOTH SEXES	IV	Standard deviation	10.28
BOTH SEXES	V	Average	87.68
BOTH SEXES	V	Standard deviation	10.68
BOTH SEXES	VI	Average	87.16
BOTH SEXES	VI	Standard deviation	9.90
BOTH SEXES	No data recorded	Average	87.75
BOTH SEXES	No data recorded	Standard deviation	9.29
MALES	Total	Average	87.79
MALES	Total	Standard deviation	10.33
MALES	I	Average	88.10
MALES	I	Standard deviation	9.56
MALES	II	Average	89.02
MALES	II	Standard deviation	9.87
MALES	III	Average	87.81
MALES	III	Standard deviation	10.05
MALES	IV	Average	87.22
MALES	IV	Standard deviation	9.62
MALES	V	Average	87.92
MALES	V	Standard deviation	11.07
MALES	VI	Average	86.99
MALES	VI	Standard deviation	10.22
MALES	No data recorded	Average	88.24
MALES	No data recorded	Standard deviation	10.91
FEMALES	Total	Average	87.96
FEMALES	Total	Standard deviation	10.14
FEMALES	I	Average	89.87
FEMALES	I	Standard deviation	8.70
FEMALES	II	Average	88.57
FEMALES	II	Standard deviation	9.84
FEMALES	III	Average	88.45
FEMALES	III	Standard deviation	11.43
FEMALES	IV	Average	87.10
FEMALES	IV	Standard deviation	11.14
FEMALES	V	Average	87.42
FEMALES	V	Standard deviation	10.25
FEMALES	VI	Average	87.32
FEMALES	VI	Standard deviation	9.60
FEMALES	No data recorded	Average	87.22
FEMALES	No data recorded	Standard deviation	7.13